辽宁省宽甸县大房身石墨矿产出特征及成因分析

Analysis on the Yield Characteristics and Cause of the Dafangshen Graphite Ore Deposit in Kuandian County,Liaoning Province

大房身石墨矿位于辽宁省宽甸县。矿区内自西向东分布13个矿体,均呈南西、北西向延伸,层状或似层状产出,赋存于下元古界高家峪岩组中,倾向北东向,倾角缓—陡多变。通过槽探、钻探等手段,对大房身石墨矿的矿产地质特征、矿体特征进行探讨。石墨矿体富集于背斜的核部或转折端,岩性以黑云变粒岩、透闪变粒岩为主,夹石岩性为浅粒岩、透闪浅粒岩。矿床成因为沉积变质型石墨矿床。

Dafangshen graphite mine is located in Kuandian County,Liaoning Province.13 ore bodies are distributed from west to east in the mining area,all extending in southwest and northwest directions,occurring in layers or quasi layers,occurring in the Lower Proterozoic Gaojiayu rock formation,tending to northeast,with slow-steep and variable dip angles.By means of trenching and drilling,the mineral geological characteristics and ore body characteristics of Dafangshen graphite mine are discussed.The graphite ore body is enriched in the core or turning end of the anticline.The lithology is mainly biotite granulite and tremolite granulite,and the intercalated rock is shallow granulite and tremolite shallow granulite.The genesis of the deposit is sedimentary metamorphic graphite deposit.